1) the branch of mathematics in which signs and letters are used to represent quantities, as in 2A + 3A = 5A (algebra)

2) showing signs of future success (auspicious)

3) a group of words used regularly; a statement of a rule, fact etc, especially one in letters, signs or numbers (formula)

4) to show signs of uncertainty or unwillingness in speech or action (hesitate)

5) feeling, showing signs of hunger; (hungry)

6) a feeling of discomfort but without clear signs of a particular illness (malaise)

7) (a system of) signs or symbols representing numbers, amounts, musical notes etc (notation)

8) to remove all signs of (something); destroy (something) (obliterate)

9) the sending of thoughts or ideas from one mind to another without using speech, signs etc (telepathy)

10) the band of space extending about 8 degrees on each side of the path followed by the Sun and containing the path of the planets; this region divided into 12 equal parts (called 'the signs of the Zodiac') named after 12 groups of stars (zodiac)